baber/WOPTO huggingface dataset:
Patent DE-3911896-A1 (DE)
Title: Vehicle lamp esp. rear with camouflage cover - has movable internal blind with elastic openings suitable for military use
Inventor: KOZIK MICHAEL
IPC: B60Q1/06
Filed: 1989-04-12
Abstract: The lamp housing has a structured lens cover (8) with regular protruding areas (9) and has the flexible blind (5) tensioned over the outside. The blind has cuts defining apertures and is backed by reinforcing strips (6) which align between the protruding areas. When the blind is pulled to one side, the areas are opened and the light can be emitted. The outside of the lamp has a second transparent cover (4) and the ends of the blind are attached to control bars (7) which are pulled by a servo linkage (12) to open and close the apertures. USE/ADVANTAGE - Lamp can be fully shuttered, simple servo drive linked to lamp supply. Camouflage lights, e.g. military vehicles.
Patent DE-3912283-A1 (DE)
Title: Circuit arrangement for solar cells
Inventor: MAASS ERNST
IPC: H02S99/00
Filed: 1989-04-14
Abstract: A selectable voltage range is maintained, as a function of the respective cell temperature and the intensity of the global radiation, by optimising the series-connected solar cells. The modules or module rows thus formed are connected in parallel in order to produce the current level. The current level can be adapted as a function of the load by connecting or disconnecting individual modules or module rows. The voltage and the current level are matched in a step-by-step manner. This circuit can be used for small and large installations.
Patent DE-3917742-A1 (DE)
Title: Nail-head contact system for semiconductor arrangement - has passivation surrounding contacting point including edges
Inventor: WILDERMUTH ANNETTE DR RER NAT
IPC: H01L21/607
Filed: 1989-05-31
Abstract: In a semiconductor contacting system employing nailhead contacting of a contact wire (2) to a pad (7) on the  semiconductor system (4, 5, 6), the wire nailhead (3) completely covers the pad (7) including the edge of its surrounding passivation (6). Prodn. of the contact system involves melting the wire end to form the nailhead and pressing the nailhead onto the pad while subjecting it to horizontal ultrasonic vibrations.  the pressure and the vibrations are selected to produce complete coverage of the pad including the edge of its surrounding passivation (6). The pad (7) may be circular or polygonal and may consist of aluminium. The contact wire (2) and its nailhead (3) generally consist of gold. ADVANTAGE - Avoids void formation caused by pad metal diffusion into the nailhead metal and nailhead protects pad against moisture and contamination.
Patent DE-3920070-A1 (DE)
Title: Worm press for vacuum pressing ceramics - has shaft concentric with cylindrical casing and nose cone parallel to its conical housing
Inventor: STEFFENS EBERHARD
IPC: B28B3/22
Filed: 1989-06-20
Abstract: The worm press is used for vacuum pressing ceramics. It has wings on its shaft which moves laterally and expands when screwed. The shaft has a cone shaped pointed end (4) which is detachable, and the shaft is concentric with the cylindrical casing, while the nose is parallel with the conical end of the casing. The central nose cone has a screw thread (7) together with a rear thread (8). USE/ADVANTAGE - This press improves upon the quality of ceramic extrusion.
Patent DE-3924337-A1 (DE)
Title: Method and device for testing the tightness of gas conduits laid underground
Inventor: SCHUETZ WOLFRAM
IPC: G01M3/20
Filed: 1989-07-22
Abstract: The invention relates to a method and a device for testing the tightness of gas conduits laid underground using a drivable probe whose measuring system detects and indicates any components of the gas sought. For excluding disturbing gas influences, an additional probe is used whose range of operation lies outside the range of operation of the first probe, especially outside the gas escape ranges to be expected in the case of leaks. This additional probe is fed to a second measuring system of similar type and serves as the reference probe for the compensation of disturbing gas components.
Patent DE-3924344-A1 (DE)
Title: Digital computer operating method esp. for cryptography - uses cyclically reproducing steps based on shift=and=add algorithm
Inventor: VIELHABER MICHAEL JOHANNES
IPC: G06F7/72
Filed: 1989-07-22
Abstract: A digital computer operating method for modular reduction of the product of two large numbers involves cyclically reproducing steps based on a shift-and-add algorithm, each contg. a summation and modular reduction. The multiplier is divided into equal length blocks.  Each step contains a summation to a step sum contg. three summands or auxiliary products of a multiplicand and one block, a constant and part of the step sum and the rest of the step sum and a base number. USE/ADVANTAGE - Esp. for use in cryptography for high speed multiplication and modular reduction of large numbers.
Patent DE-3927521-A1 (DE)
Title: IC engine piston with variable compression height
Inventor: BIERKANT WOLFGANG
IPC: F02B75/04
Filed: 1989-08-21
Abstract: The piston with a variable compression height has a crown (3) with rings sliding axially on a base portion (2) accommodating the gudgeon pin. Control and damping chambers (8,9) filled with pressurised oil are connected by a non-return valve with a by-pass throttle, their vol. altering as the crown slides.  The control chamber (8) is supplied with oil via a second non-return valve, the oil being discharge from it by a pressure relief valve. The non-return valve, and/or the one between the chambers, is formed by a flexible strip(s) masking the inlet or outlet ports.
Patent DE-3927851-A1 (DE)
Title: Moving object spatial position detector and guide - has electro=optical system detecting lights on aircraft steering, guidance computer and radio link for automatic landing
Inventor: VELGER MORDEKHAI DR
IPC: G05D1/00
Filed: 1989-08-23
Abstract: The system contains an arrangement (1) of three light sources on a triangle which are applied to the object (20) and facing a steering or guiding system (2-4). An electrooptical sensing arrangement contains a region or area imaging device facing the object and an image processing computer. A steering or guidance computer is connected to the image processing computer and a radio link is used to exchange radio signals with the object. The system enables accurate measurement in all  six degrees of freedom of the object and guides its motion on the basis of the measurements. USE/ADVANTAGE - Determining spatial position of moving object and guiding its motion.  Active navigation system, esp. for automatic landing of aircraft. Enables aircraft to be very accurately guided along intended flight path whilst performing all necessary corrections instantaneously.
Patent DE-3929413-A1 (DE)
Title: Adiabatic catalytic processes in controlled temp. conditions - without heat loss to environment
Inventor: KOENIG PETER DIPL ING DR
IPC: B01J8/06
Filed: 1989-09-05
Abstract: Liq., vapour or gas is reacted during descent through a catalyst bed (2) supported on a grid (3) preceding the base outlet from a tubular container (1). The container is held within a capped outer jacket (10) defining an annular cavity (11) holding a tempering liq., e.g. water, thermo-oil, or molten salt. The liq. is pref. in pumped circulation. Though the liq. passes the end of a helical feeder (12) for the medium to be reacted, and which is delivered (13) into the container adjacent a layer (4) of inert granules (glass or ceramic). The annular cavity also holds an electric heater coil (15), while the lower container area round the catalyst is surrounded by thermally insulating material such as asbestos. USE - Esp. for organic reaction, such as small-scale testing of processes to be scaled up for subsequent use in a large shaft or multi-scale reactor.
Patent DE-3932420-A1 (DE)
Inventor: HERTWECK GERNOT DIPL ING
IPC: F02B3/06
Filed: 1989-09-28
Abstract: A method is described for driving a throttle element arranged in the intake system of an air-compressing injection internal combustion engine, which element in the low load and speed ranges is held in the closed position and in the middle and high load and speed ranges is held in an opening position. 
<??>In order to be able to achieve a reduction in the emission of pollutants, particularly particle and nitrogen oxide emissions without the use of a costly device for the recirculation of exhaust gas, it is proposed to adjust the throttle element at any operating point of the internal combustion engine to that opening position which corresponds to an absolute pressure in the intake system downstream from the throttle element, which is determined from a load and speed-related characteristic, the reference value for the absolute pressure being corrected as a function of other operating parameters of the internal combustion engine. 
<IMAGE>
Patent DE-3932648-A1 (DE)
Title: Local coil for NMR tomography - has PIN=diode as separating diode in both upper and lower U=shaped parts for decoupling from whole body antenna in receiving circuit
Inventor: ERLENKAMP KARL-ULRICH
IPC: G01R33/34
Filed: 1989-09-29
Abstract: The lower part for special applications is connectable via plug (15-18) couplings to the upper part. Each part contains at least one h.f. coil (6,7;13,14). The lower part has an equalising and tuning circuit (30,31,34) for use by both parts. For decoupling the local coil from a whole body antenna, a PIN-diode (4,9) serving as a separating diode, is provided in the receiving circuit of both  parts. A control current for conductive control of the PIN diodes is lead over both of them in series if the upper part is plugged in but only over that (4) of the lower part if not plugged in. ADVANTAGE - Simple control possibility for decoupling local coil whether upper part is plugged in or not.
Patent DE-3937898-A1 (DE)
Title: Determn. of an analyte in ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ sample - by immobilising with solid, sepg. solid from liq. remaining and determining free analyte in the liq.
Inventor: PAPPERT GUNTER DIPL PHYS DR
IPC: G01N33/74
Filed: 1989-11-15
Abstract: A process for determining an analyte (I) in a sample in which a bonding partner (II) for (I) is also present, comprises (a) contacting the sample contg. (I) and (II) with a solid on which (I) or a (I)-analogue is immobilised or with a solid and (I) or a (I)-analogue capable of being immobilised on the solid, so that (I) is released from (II) and (II) is bonded; (b) sepg. at least part of the liq. from the solid; and (c) determining the free (I) in the sepd. liq. A test strip for determining (I) in samples is also new and consists of at least one solid body through which the sample liq. can flow, and on which (I) or the (I)-analogue is immobilised, (ii) at least one solid body through which the sample can flow, and on which a labelled (I) or (I)-analogue or a labelled (II) is impregnated but can be washed out and (iii) at least one solid body through which the sample can flow and on which (II) or (I) is immobilised. USE/ADVANTAGE - The process can be used to determine protein-bound (I), such as vitamin B12, thyroxine and various steroid hormones. The process can determine the total amt. of (I) regardless of whether it is in free or bonded form in the original sample.  Sepn. of (II) from the sample is very simple and complete. Any immune or enzyme reactions are not disturbed.
Patent DE-3940704-A1 (DE)
Inventor: KEMP HELMUT
IPC: A61Q19/10
Filed: 1989-12-08
Abstract: A bath additive is proposed which has a base of vegetable or animal raw materials containing an aqueous solution of a mixture of amphoteric, anionic and nonionic substances having a base of a vegetable and/or animal oil and an alcoholic solution having a base of one or more medicinal plants. The bath additive is used as agent for the treatment of microbially-induced as well as chronically endogenous skin diseases.
Patent DE-4000286-A1 (DE)
Inventor: KOPPATZ DIETMAR DIPL ING
IPC: H05K9/00
Filed: 1990-01-08
Abstract: The invention relates to a screening container for a region of a printed circuit board with a first half-section arranged on one side of the board and a second on the other and securing means for the half-sections. In order to attain a simple and properly fitting construction, tongues (5) extend from the edge of one of the half-sections (2, 3), pass through the slots (9) in the printed circuit board (6) bordered by conductive tracks and have projections (11) which lie against the tracks (7) carrying the screening potential under contact pressure and the free end regions (13) of the tongues (5) electrically contact the other half-section (2).
Patent DE-4000328-A1 (DE)
Title: Twin-keel ship - has water rams between keels, driving hydraulic pumps supplying generator-driving motors
Inventor: HUSNIK FRANZ
IPC: B63H19/02
Filed: 1990-01-08
Abstract: The ship has twin parallel keels running from bow to stern, and sloping downwards from bow to midships and then up to the stern again. Between the keels (4) are 20 each water rams (2) forward and aft of the midships position,  i.e. 40 in all. A single-cylinder hydraulic oil pump  (3) is mounted on each ram, and delivers from a storage tank to a high pressure one. The latter in turn supplies 8 hydraulic motors, which drive generators supplying electric motors at the stern and driving the propellers. A safety valve supplies a separate hydraulic motor with generator when pressure is excessive. The generator supplies an electolysis system in which hydrogen stored in a receiver is used to drive two other generators via hydrogen motors. These propel the ship slowly, in which condition a single midships hydraulic thruster is brought into use, operated and controlled by a five-part hydraulic system.
Patent DE-4002758-A1 (DE)
Title: Knife sharpener tool - has cutting edge drawn along groove formed by two hardened pins clamped side by side
Inventor: KRAUSE GEORG
IPC: B24D15/08
Filed: 1990-01-31
Abstract: The knife sharpener does not abrade metal from the blade but works on the principle of removing waviness of the edge (50) of the blde whilst ensuring that the burr (52) remains entral. This is in contrast to the use of a steel, when the burr is pushed over at an angle and the original cutting action is lost. The sharpener has tow hardened 3 mm diameter pins clamped side by side between two guide plates. The knife blade is drawn backwards and forwards under light pressure in the groove formed by the two pins. Finally the knife is drawn downwards in the direction (B). This eases the pins slightly apart so that the burr passes through the gap and finishes in correct alignment. ADVANTAGE - Original cutting action is restored. Longer edge life.
Patent DE-4008120-A1 (DE)
Title: Cyclic alkylene:imine prodn.
Inventor: SUGIYAMA HITOSHI
IPC: C07D295/023
Filed: 1990-03-14
Abstract: Cyclic alkyleneimine prodn. comprises reacting a cyclic ether with a cpd. of formula NH2R (where R=H or alkyl) in a vapour phase in the presence of a solid acid catalyst. The reaction is conducted under a pressure of at least 0.5 kg/cm2G as the total pressure of partial pressures of the reactants and the reaction prod.
Patent DE-4014749-A1 (DE)
Title: Interchangeable picture frame - has backing sheet with adhesive coating for non-slip positioning and easy removal of pictures
Inventor: BRESCIANI RICCARDO
IPC: A47G1/06
Filed: 1990-05-08
Abstract: The changeable picture frame has a frame made up of profiled pieces to hold a backwall which can be positioned by fixing means. The back wall (3) is provided on the side facing the picture over the entire surface with an adhesive coating (4) which is covered with a tear off foil which exposes the adhesive. The adhesive coating is designed so that the pictures can be removed and new pictures added. ADVANTAGE - Non-slip positioning of the photos.
Patent DE-4015146-A1 (DE)
Title: Cleaning system to remove lubricant from workpieces - has three stations with drum inserts for simultaneous different cleaning stages
Inventor: KNIPPING FRANK A W
IPC: B08B3/04
Filed: 1990-05-11
Abstract: When removing lubricants from workpieces such as screws, bolts etc. a centrifuge station is used in front of which there is a filling station (5) with removable drum insert for the workpieces. An emptying station (6) with drum insert for emptying the clean workpieces is mounted at the outlet set of the centrifuge station. During the time in which one drum insert (4), filled with dirty workpieces, is spun in the centrifuge (3), another drum insert (4) is at the same time added to the filling station (5) and a further drum insert (4) with cleaned workpieces is removed from the centrifuge at the emptying station (6). Once the various inserts have been spun, filled and emptied respectively, they are then all passed on simultaneously to the next station. ADVANTAGE - A continuous process is now possible.
Patent DE-4016880-A1 (DE)
Title: Cooled boiler door assembly - is connected by flexible pipes to boiler and water return union
Inventor: VARGA ZELJKO DIPL ING
IPC: F23M7/04
Filed: 1990-05-25
Abstract: The door of a boiler for central heating is water cooled. This prevents overheating of the door while increasing heat transfer to the water. The boiler door (14) has a flexible pipe (19) delivering the water (4) from it to the boiler, while a second such pipe (20) delivers water to it from the boiler return union (26) where the water is coldest. USE/ADVANTAGE - Cooled boiler door assembly reduces door weight while aiding heat transfer in central heating boiler.
Patent DE-4018764-A1 (DE)
Title: Modified urea-melamine resin solns. prodn. - by adjusting ph of formaldehyde soln. contg. methanol using tri:ethanolamine, sodium hydroxide and ammonium hydroxide
Inventor: ROELL HEIDRUN DIPL CHEM
IPC: C08G12/46
Filed: 1990-06-12
Abstract: Prepn. of modified urea-melamine resin solns. (I) employing NaOH and/or triethanolamine and/or NH4OH as catalyst by multi-stage condensation is claimed. The pH of a formaldehyde soln. contg. 5-11.5 wt.% methanol is adjusted to 7.5-8.1 by the addition of triethanolamine or NaOH or NH4OH, to pH 8.7-10 esp. 8.7-9.3 by 0.5-10 esp. 0.5-5 wt.% substances contg. reactive -CONH2- and/or -CH2OH- and/or -CH(OH)-gps. and further addition of NaOH, and melamine and urea are added in a molar ratio of 1:1.3-2 at a temp. under 323 esp. 308-318 K to produce a molar ratio of amino cpds. to formaldehyde of 1:1.5-1.9, and condensn. is carried out at 363-373 K upto a water-compatibility of 1:1-2 and the pH-value falls from 8.7-9.3 to 8.0-8.2 during the first 15-25 min. of condensation by the step wise or continuous addn. of NaOH and condensn. is terminated at pH 7.5-8.0. USE/ADVANTAGE - (I) are used in the impregnation of webs of paper used in the mfr. of laminated plastics. The prod. is inexpensive.
Patent DE-4019126-A1 (DE)
Title: Packing net labelling strip - accommodates self-adhesive label of length sufficient for bar code and legible information
Inventor: SCHILLING PETER
IPC: G09F3/02
Filed: 1990-06-15
Abstract: The labelling strip is for a hose-type packing net accommodating citrus fruit, potatoes, onions, etc. On one side (3) it is joined to an oblong self-adhesive label (6), of the same or slightly less width (7) than its own (2). Label length (8) is sufficient to accommodate a lengthwise bar code (10) of up to 13 positions, in addition to uncoded legible information (12, 13) regarding contents, weight, etc. USE/ADVANTAGE - Allows provision of full data for clipping to packing.
Patent DE-4026009-A1 (DE)
Title: Prodn. of reinforced concrete with aligned strands - incorporates and shapes wire just before discharge
Inventor: SCHMITT HARALD
IPC: B28B1/52
Filed: 1990-08-14
Abstract: The strands of wire (1) are introduced into the concrete, aligned and cut to length just before entering the discharge nozzle.  The tube (2) leading from the pump is the same as in previously known machines, but cutters (3) and cold straightening and alignment rollers (1) are added on either side. The wires are placed near the sides of the concrete stream. USE/ADVANTAGE - An economical method of producing shaped concrete members and introducing wire reinforcement.
Patent DE-4030846-A1 (DE)
Inventor: CAO CHI-THUAN DR ING
IPC: B62D7/15
Filed: 1990-09-29
Abstract: Described is a method of controlling the steering angle  delta  of one of more wheels of a vehicle in order to improve vehicle dynamic behaviour. The steering angle  delta  and a parameter characteristic of vehicle dynamic behaviour (e.g. yaw rate  omega ) are measured, this parameter being combined with the steering angle to give a calculated parameter. Using a reference model, a reference parameter is generated. Making use of the steering angle and the difference between these two parameters, one or more reference steering angle(s) are determined in accordance with a given control law.
Patent DE-4032327-A1 (DE)
IPC: G01N21/956
Filed: 1990-10-11
Abstract: During the manufacture of semiconductor components, the surface quality of the semiconductor chips as well as their relative position with respect to a housing, in particular the bonding pads between the chip and the connection elements in the housing, must be monitored. For that purpose, the semiconductor components are lighted by means of a lighting device and observed by means of a camera that can supply video output signals to a video signal processing device for recognizing defects of manufacture. The effective lighting directions are determined according to a pattern recognition process, so that contrast-rich images of the structures of interest or their profiles may be reproducibly recognized.
Patent DE-4034848-A1 (DE)
Title: Hand tool for scraping ice from windscreen - is stored in filler cap flap, and has scraper edge and serrated edge
Inventor: PFADENHAUER DIETER
IPC: B60S3/04
Filed: 1990-11-02
Abstract: Hand tool for the removal of ice from the windscreen of a vehicle having a scraper edge (10) and a serrated edge (11). The tool is designed to fit into a gap (b) formed on the inside of a vehicle filler cap flap (2) hinged at (3). ADVANTAGE - Convenient method of storing an ice scraper which can be used without having to open the vehicle door.
Patent DE-4039730-A1 (DE)
Title: Closed-coupled extruder and calender line with flow divider - defines shape creating wedge flow between die face and roll for intensive shearing, homogenisation and degassing
Inventor: RUCLADEVA NADESCDA DR ING
IPC: B29C48/08
Filed: 1990-12-10
Abstract: Arrangement for calender line with close-coupled extruder feed, in which flow divider(s) of defined shape creates wedge-shaped flows between the front face of the die and the surface of the rolls, in which the material is intensively sheared and deformed as it flows onto the rolls. USE/ADVANTAGE - For intensifying the process esp. wrt homogenisation and degassing of the material flowing into the calender nip. Compared with the 'Bekalex-Princip' (RTM) of Bersdorff, permits sufficient homogeniety and degassing of the very rapidly worked film entering the nip. Several extruders may feed to the calender through parallel channels where each is degassed, permitting calendering of a sheet with different properties across the width
Patent DE-4041899-A1 (DE)
Title: Motor vehicle gear box - has shafts, ending short of housing journals engaging support sleeves for shafts
Inventor: FRIEDRICH KARL ING
IPC: F16H57/021
Filed: 1990-12-27
Abstract: The change speed gear has two or more shafts, carrying meshing loose and fixed gears, and a housing, closed at the shaft end by a cover. The shafts (1,2) end in front of the cover (7), which has inward-projecting bearing journals (8,9).  Sleeves (10,11) are screwed into the shafts, which, with their inner resp. outer surfaces, form running surfaces for the bearing journals (8), and for a loose gear (3) next to the cover. Alternatively, these act as a centring sleeve (11), to carry a double toothed gear (4), which is non-turnably fastened to a shaft, and supported on the bearing journal (9).